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Homework Help: Introductory of Chemistry

  1. Sep 28, 2007 #1
    1. The problem statement, all variables and given/known data

    Complete the following nuclear reactions

    Enter mass number, atomic number, and then symbol

    A) 232 92U--->4 2He + 228 /90 / _______________

    2. Relevant equations

    4 2He + 228 90U

    3. The attempt at a solution

    i got the mass number (228) and atomic number (90), but i could not figure out how to write the symbol.
    will anybody please help me?
    my guess of symbol was 4 2He + 228 90U but obviously it was wrong
  2. jcsd
  3. Sep 29, 2007 #2
    Consult a periodic table to figure out what is the symbol of the element with mass number 228 and atomic number 90.
  4. Oct 1, 2007 #3
    thank you
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